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Comfort Panels have a system function for switching between summer time and winter time. The plant-wide and consistent changeover between time zones is ensured by the fact that the Comfort Panel is configured as a time slave of an S7-1200/1500 PLC.

The diagnostics of devices, modules and networks play an ever-increasing role in automation technology. By diagnosing with a user program, faulty modules can be detected. This enables you to also program responses to diagnostic messages.

To retain parameters (e.g. position values for drives, limit values) after POWER OFF and restart, they must have been backed up persistently beforehand. These parameters can be stored as retain tags or in a CSV file with the Recipe Functions.

You get a TIA Portal project for multi loop controlling using the example of a “chocolate water bath”. The cascade control is realized with the technology object "PID_Temp". The application example is described in detail.

Modbus/TCP communication between S7-1500 CPUs and S7-1200 CPUs is presented. The instructions "MB_CLIENT" and "MB_SERVER" are called and parameterized in the user program of the S7-1500 CPU and the S7-1200 CPU.

A machine executing dangerous movements is controlled via a fail-safe controller and switched by means of contactors. The correct functioning of the contactors shall be monitored in order to ensure a high diagnostic coverage and, thus, a high SIL or PL.